People think that sportsmen who like martial arts are very rude. They always look for a chance to fight with somebody. And only thing they know is how to beat down others.
But I think that this idea is preconception, just stupid preconception. The base of martial arts is the philosophy (wushu, karate, aikido, judo, etc), and this philosophy is not aggressive. The philosophy of martial arts teaches sportsmen not to fight and avoid the misusing their knowledge.
So masters of martial arts are less dangerous than ordinary people.
Don't you think so?